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Tue, 03 Nov 2026 00:38:55 -0800 (PST) Received: from localhost ([208.127.45.21]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4abeb77af8csm432002285e9.1.2026.11.03.00.38.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 03 Nov 2026 00:38:54 -0800 (PST) Date: Tue, 3 Nov 2026 09:38:50 +0100 From: Jiri Pirko To: Jason Gunthorpe Cc: "Aneesh Kumar K.V" , linux-coco@lists.linux.dev, linux-kernel@vger.kernel.org, linux-api@vger.kernel.org, x86@kernel.org, kvm@vger.kernel.org, linux-doc@vger.kernel.org, david.quigley@intel.com, lukas@wunner.de, ksinyuk@kernel.org, rodrigo.vivi@intel.com, cedric.xing@intel.com, sameo@meta.com, drdeeglaze@gmail.com, James.Bottomley@hansenpartnership.com, aik@amd.com, jpiotrowski@nvidia.com, qinkun@google.com, pgonda@google.com, jic23@kernel.org, alistair.francis@wdc.com, ankita@nvidia.com, suzuki.poulose@arm.com, kas@kernel.org, rick.p.edgecombe@intel.com, elena.reshetova@intel.com, dave.hansen@linux.intel.com, sathyanarayanan.kuppuswamy@linux.intel.com, peter.fang@intel.com Subject: Re: [PATCH RFC 00/20] attestation: Add a common subsystem and TDX support Message-ID: References: <20261015145053.3664509-1-jiri@resnulli.us> <20261023142038.GE3977851@ziepe.ca> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261023142038.GE3977851@ziepe.ca> Fri, Oct 23, 2026 at 04:20:38PM +0200, jgg@ziepe.ca wrote: >On Fri, Oct 23, 2026 at 01:34:53PM +0530, Aneesh Kumar K.V wrote: [..] >> >> ./ctlvctl/ctlvctl --spec-dir=./specs/ exec ctlv0 device-get >> # device-get, 1 fragment, generation 0 >> device.generation 0 >> device.caps >> cap.evidence >> cap.min-challenge-length 0 >> cap.max-challenge-length 0 >> cap.max-total-output-length 369098752 >> cap.evidence-flags evidence-accept >> cap.object >> cap.blob-class cert-chain >> cap.blob-instance 0 >> cap.format spdm-cert-chain >> cap.representation raw >> cap.representation tcb-digest >> cap.hash-algo 4 >> cap.hash-algo 5 >> cap.hash-algo 6 >> cap.max-length 16777216 >> device.info >> pci.name 0000:02:00.0 >> >> I think we can use evidence-refresh to select the blob-instance for the >> desired slot once the CCA specification supports that. > >Jiri these ctlv outputs are really neat, it would be nice to include >some of them in the commit messages so people can get a sense of how >this looks without running it? Okay. [..]